text: const {Parser} = require('ringo/args');
  const {RED, BLUE, YELLOW, BOLD, writeln} = require('ringo/term');
  const system = require('system');
  
  const main = (args) => {
      const parser = new Parser();
      parser.addOption('f', 'foo', null, 'Enable foo bit');
      parser.addOption('b', 'bar', '[BAR-FACTOR]', 'Specify bar factor');
      parser.addOption('h', 'help', null, 'Display help');
      args.shift();
      const options = parser.parse(args);
      if (options.help) {
          writeln(BLUE, BOLD, 'Options:');
          writeln(BLUE, parser.help());
      } else {
          if (options.foo) {
              writeln(RED, 'Foo:', BOLD, YELLOW, options.foo);
          }
          if (options.bar) {
              writeln(BLUE, 'Bar factor:', BOLD, options.bar);
          }
      }
      if (!Object.keys(options).length) {
          writeln(BOLD, "Run with -h/--help to see available options");
      }
  }
  
  if (require.main === module) {
      main(system.args);
  }
  